
Contents
Preface ........................................................................................................................................ 6
1 Introduction ......................................................................................................................... 8
2 Description ........................................................................................................................ 10
2.1 EQEP Inputs ............................................................................................................. 11
2.2 Functional Description .................................................................................................. 11
2.3 eQEP Memory Map ..................................................................................................... 12
3 Quadrature Decoder Unit (QDU) ........................................................................................... 14
3.1 Position Counter Input Modes ......................................................................................... 14
3.2 eQEP Input Polarity Selection ......................................................................................... 17
3.3 Position-Compare Sync Output ........................................................................................ 17
4 Position Counter and Control Unit (PCCU) ............................................................................ 17
4.1 Position Counter Operating Modes.................................................................................... 17
4.2 Position Counter Latch .................................................................................................. 20
4.3 Position Counter Initialization .......................................................................................... 22
4.4 eQEP Position-compare Unit .......................................................................................... 22
5 eQEP Edge Capture Unit ..................................................................................................... 24
6 eQEP Watchdog ................................................................................................................. 27
7 Unit Timer Base ................................................................................................................. 27
8 eQEP Interrupt Structure ..................................................................................................... 28
9 eQEP Registers .................................................................................................................. 28
SPRUG05A – August 2008 – Revised December 2008 Table of Contents 3
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